Little ants that crawl into your ass and make it itch. When you scratch them, they make your fingers smell like relish. (From the Trailer Park Boys live show)
"Well Ricky, you may just have a bad case of ass ants", saidBubbles.
(n.) a large volume of matter ejected from the anus with the consistency of regurgitated food. It is usually the result of eating ethnic food or viral infections in the digestive system.
(.v) to expel such matter from the anus.
He came back from Taco Bell and left ass vomit all over my toilet seat!